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1.
O. L. Lomovskaya S. Z. Mindlin Zh. M. Gorlenko R. B. Khesin 《Molecular & general genetics : MGG》1986,202(2):286-290
Summary HgCl2-resistant strains of Acinetobacter sp. obtained from the soil at the Khaidarkan mercury mine (Kirghiz SSR) were found to contain, apart from large plasmids (60 kb), a small plasmid (7.5 kb) designated pKL1. It was established by conjugative crosses and transformation that pKL1 is a broad host range mobilizable plasmid and that it carries the Hgr determinant. The restriction map of pKL1 was constructed; the site of the Hgr determinant and the regions essential to replication were localized. A comparison of these results with earlier data suggests that microorganisms belonging to one microbiocenosis may carry Hgr determinants on plasmids with highly different structures and properties.Deceased on July 16, 1985 相似文献
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Intercontinental spread of promiscuous mercury-resistance transposons in environmental bacteria 总被引:4,自引:0,他引:4
Olga Yurieva Gennady Kholodii Leonid Minakhin Zhosephine Gorlenko Eza Kalyaeva Sofia Mindlin & Vadim Nikiforov 《Molecular microbiology》1997,24(2):321-329
We demonstrate that horizontal spread of mer operons similar to worldwide spread of antibiotic-resistance genes in medically important bacteria occurred in bacteria found in ores, soils and waters. The spread was mediated by different transposons and plasmids. Some of the spreading transposons were damaged in different ways but this did not prevent their further spread. Certain transposons are mosaics composed of segments belonging to distinct sequence types. These mosaics arose as a result of homologous and site-specific recombination. Our data suggest that the mercury-resistance operons of Gram-negative environmental bacteria can be considered as a worldwide population composed of a relatively small number of distinct recombining clones shared, at least partially, by environmental and clinical bacteria. 相似文献
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Gorlenko V. M. Bryantseva I. A. Samylina O. S. Ashikhmin A. A. Sinetova M. A. Kostrikina N. A. Kozyaeva V. V. 《Microbiology》2020,89(6):697-707
Microbiology - Soda lakes are relic ecosystems inhabited by unique microorganisms, which are doubly extremophilic: both haloalkaliphilic and natronophilic. Two morphologically and physiologically... 相似文献
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E. S. Kashkak N. L. Bel’kova E. V. Danilova O. P. Dagurova B. B. Namsaraev V. M. Gorlenko 《Microbiology》2016,85(5):592-603
High-throughput sequencing was used for comparative analysis of microbial communities of the water and mat from the Hoito-Gol mesothermal mineral sulfide spring (Eastern Sayan Mountains, Buryat Republic). Activity of microbial communities was determined. While both spring biotopes were dominated by members of three bacterial phyla—Proteobacteria, Bacteroidetes, and Firmicutes—they differed drastically in the composition of predominant phylotypes (at the genus level). In the water, the organisms widespread in aquatic environments were predominant, mostly aerobic chemoorganotrophs of the genera Acinetobacter, Pedobacter, and Flavobacterium. In the microbial mat, the organisms actively involved in the sulfur cycle predominated, including sulfur-reducing bacteria Sulfurospirillum, sulfate-reducing deltaproteobacteria, sulfuroxidizing chemoautotrophic bacteria, anoxygenic phototrophic bacteria of the phyla Chloroflexi and Chlorobi, as well as purple bacteria belonging to the α-, ß-, and γ-Proteobacteria. Microbial mats of the spring exhibited higher phylogenetic diversity compared to high-temperature mats containing photosynthetic microorganisms. 相似文献
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A. A. Dymova M. M. Umarov N. V. Kostina M. V. Golichenkov M. V. Gorlenko 《Biology Bulletin》2016,43(5):390-397
It was found that ants significantly affect the physiological activity and functional diversity of soil microbial communities, and redistribution of biophilic elements (C and N) down through the profile occurs in anthills compared to the control soil, as well as their accumulation in the underground part of the ant nests. A high urease activity was revealed in ant nests and ants. Functional dissimilarities of bacterial communities in all studied objects were determined by the multisubstrate test. 相似文献